January weather forecast
Mirissa, Sri Lanka

January ushers in the new year in Mirissa, Sri Lanka, sustaining favorable weather conditions. While the sea temperature holds steady, there is an observable increment in sunshine hours per day. High UV ratings suggest amplified sunlight intensity, making skin protection paramount. The recorded high and low temperatures for this month fluctuate between 30°C (86°F) and 22°C (71.6°F) respectively. Despite its warmth, January experiences a moderate rainfall of 89mm (3.5") dispersed over an approximate five days.

Temperature

January's advent in Mirissa denotes a minor fluctuation in the average high-temperature to a tropical 30°C (86°F) from December's 29°C (84.2°F). In January, the average low-temperature in Mirissa records at a pleasant 22°C (71.6°F) during the nights.

Rainfall

January is the month with the least rainfall. Rain falls for 5 days and accumulates 89mm (3.5") of precipitation.

Sea temperature

January, February, June through October and December, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater in Mirissa.
Note: Swimming, diving, and other activities in water temperatures between 25°C (77°F) and 29°C (84.2°F) are thought to be quite enjoyable and satisfying for extended periods, with no discomfort.

Daylight

The average length of the day in January is 11h and 49min.
On the first day of the month, sunrise is at 06:17 and sunset at 18:04. On the last day of January, in Mirissa, Sri Lanka, sunrise is at 06:25 and sunset at 18:17 +0530.

Sunshine

In January, the average sunshine in Mirissa is 7h.

UV index

The months with the highest UV index are January through October, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an extreme threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum daily UV index of 12 during January morphs into the following directions:
Carry out all vital precautions. Protection from sun exposure is a must. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Every two hours, apply and reapply an SPF 30+ broad-spectrum sunscreen, especially after swimming or engaging in outdoor activities. Be mindful! Sand and water reflections can up the Sun's UV exposure.